Stuart Bennett lectures in control engineering at the University of Sheffield, England. After a student apprenticeship with the British Aircraft Corporation, he spent four years on research into the lubrication of components for spacecraft. He joined the Control Engineering Department of the University of Sheffield in 1968, where his main interests have been computer control and the history and development of control engineering - complementary interests that have led to his involvement in the teaching of courses on the relationship between technology and society. Dr Bennett is a member of the Institution of Mechanical Engineers.